/*
 * Bittorrent Client using Qt and libtorrent.
 * Copyright (C) 2014  Vladimir Golovnev <glassez@yandex.ru>
 * Copyright (C) 2006  Ishan Arora and Christophe Dumez
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * In addition, as a special exception, the copyright holders give permission to
 * link this program with the OpenSSL project's "OpenSSL" library (or with
 * modified versions of it that use the same license as the "OpenSSL" library),
 * and distribute the linked executables. You must obey the GNU General Public
 * License in all respects for all of the code used other than "OpenSSL".  If you
 * modify file(s), you may extend this exception to your version of the file(s),
 * but you are not obligated to do so. If you do not wish to do so, delete this
 * exception statement from your version.
 *
 * Contact : chris@qbittorrent.org
 */

#ifndef HTTPREQUESTPARSER_H
#define HTTPREQUESTPARSER_H

#include "httptypes.h"

class HttpRequestParser
{
public:
  enum ErrorCode { NoError = 0, IncompleteRequest, BadRequest };

  // when result != NoError parsed request is undefined
  // Warning! Header names are converted to lower-case.
  static ErrorCode parse(const QByteArray& data, HttpRequest& request, uint maxContentLength = 10000000 /* ~10MB */);

private:
  HttpRequestParser(uint maxContentLength);

  ErrorCode parseHttpRequest(const QByteArray& data, HttpRequest& request);

  bool parseHttpHeader(const QByteArray& data);
  bool parseStartingLine(const QString &line);
  bool parseContent(const QByteArray& data);
  bool parseFormData(const QByteArray& data);
  QList<QByteArray> splitMultipartData(const QByteArray& data, const QByteArray& boundary);

  static bool parseHeaderLine(const QString& line, QPair<QString, QString>& out);
  static bool parseHeaderValue(const QString& value, QStringMap& out);

  const uint maxContentLength_;
  HttpRequest request_;
};

#endif
